S
M
T
W
T
F
S
30
92°
69°
31
89°
68°
1
90°
70°
2
92°
68°
3
90°
67°
4
88°
68°
5
88°
67°
6
91°
69°
7
92°
70°
8
91°
69°
9
91°
69°
10
90°
68°
11
91°
69°
12
91°
69°
13
90°
68°
14
91°
69°
15
90°
68°
16
89°
68°
17
89°
67°
18
88°
65°
19
87°
67°
20
88°
68°
21
89°
67°
22
85°
66°
23
88°
65°
24
86°
66°
25
88°
65°
26
89°
65°
27
85°
65°
28
87°
64°
29
88°
65°
30
Hist. Avg.
85°
61°
1
Hist. Avg.
85°
61°
2
Hist. Avg.
84°
61°
3
Hist. Avg.
84°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Havana
Havana's September 2026 forecast shows daily high temperatures ranging from 85° to 92°, with overnight lows between 64° and 70°. The average high for September is 89° with an average low of 67°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Havana. See also: October | November | December.